Percy is back at Camp Half-Blood, following the events of the previous film. His world is rocked when he realizes he is not alone: he has a half-brother, Tyson, who is part Cyclops. Tyson is feared and cast out by the other demigods, until the camp is attacked by a large mechanical bull, and Tyson plays a major role in stopping it. The camp finds that their magical tree, which protects them from outsiders, has been poisoned. The adults at the camp fear there's nothing to be done, but Percy and his friends think the Golden Fleece, a magical artifact with the power to heal anything, could get the job done. They must sail across the Sea of Monsters to steal the Fleece from Polyphemus, a vicious Cyclops who lives in seclusion. They also find out, much to their dismay, that Luke, the Lightning Thief, is also looking for the Fleece in order to unleash Kronos, a Titan that will destroy Earth and Olympus. After a quick visit to Luke's father, Hermes, Percy and his gang set off across the Sea to try to take the Fleece before Luke can get there. They successfully beat Luke to the artifact, but when Luke kills Tyson and prepares to unleash the end of the world, it's up to Percy to figure out how one can kill a Titan, in order to save his friends, family, and planet.
Best part of story, including ending:
It's even more fast-paced and funny than the first Percy Jackson film. The jokes all hit, and the action is slick.
Best scene in story:
Kronos is an awesome-looking special effect, made up of shifting rocks, and his reveal and subsequent action scene is pretty spectacular.
Opinion about the main character:
Percy goes from coming of age in the first film to needing to become the leader of his kind in the second, and the burden of this knowledge makes our hero sympathetic.